oski | 2213c9b915e45237c418089f12469a32144e7bd18bb1a79ada1f45b861d56518

General

Target

Sample_price list_new order.exe
Size

643KB
MD5

d5ad3655ac02936e060e384f1078c7f5
SHA1

39448e2ba7f287ecf60f95589072ddcf7cdc0369
SHA256

2213c9b915e45237c418089f12469a32144e7bd18bb1a79ada1f45b861d56518
SHA512

c36d8376276a964ea818df17c9233fa75745de84d33ddd6d0e21260acd760980f106fa747f6d51d3623e1b4c329e10e48fabff8bcd97fbba57ad348bf3ccde93

Score

10^/10

oski infostealer spyware stealer

Malware Config

Extracted

Family

oski

C2

masterwork2.co.vu

Signatures

Oski
Oski is an infostealer targeting browser data, crypto wallets.
infostealer oski

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

Processes:

Sample_price list_new order.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\Control Panel\International\Geo\Nation	Sample_price list_new order.exe

Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials in Files
T1081
Suspicious use of SetThreadContext 1 IoCs

Processes:

Sample_price list_new order.exe

description pid process target process

PID 1148 set thread context of 1424 1148 Sample_price list_new order.exe Sample_price list_new order.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082
Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

3552 1424 WerFault.exe Sample_price list_new order.exe
Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
persistence

Scheduled Task
T1053

Processes:

schtasks.exe

pid process

3792 schtasks.exe
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

powershell.exe

pid process

1528 powershell.exe
1528 powershell.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

powershell.exe

description pid process

Token: SeDebugPrivilege 1528 powershell.exe

description	pid	process	target process
PID 1148 set thread context of 1424	1148	Sample_price list_new order.exe	Sample_price list_new order.exe

pid	pid_target	process	target process
3552	1424	WerFault.exe	Sample_price list_new order.exe

pid	process
3792	schtasks.exe

pid	process
1528	powershell.exe
1528	powershell.exe

description	pid	process
Token: SeDebugPrivilege	1528	powershell.exe

Suspicious use of WriteProcessMemory 15 IoCs

Processes:

Sample_price list_new order.exe

C:\Users\Admin\AppData\Local\Temp\Sample_price list_new order.exe
"C:\Users\Admin\AppData\Local\Temp\Sample_price list_new order.exe"
1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1148

C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\mloRUbz.exe"
2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1528

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\mloRUbz" /XML "C:\Users\Admin\AppData\Local\Temp\tmp325A.tmp"
2⤵
- Creates scheduled task(s)
PID:3792

C:\Users\Admin\AppData\Local\Temp\Sample_price list_new order.exe
"C:\Users\Admin\AppData\Local\Temp\Sample_price list_new order.exe"
2⤵
PID:1424

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 1424 -s 1312
3⤵
- Program crash
PID:3552

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 360 -p 1424 -ip 1424
1⤵
PID:2796

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Scheduled Task

1

T1053

Persistence

Scheduled Task

1

T1053

Privilege Escalation

Scheduled Task

1

T1053

Defense Evasion

Credential Access

Credentials in Files

1

T1081

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Data from Local System

1

T1005

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmp325A.tmp
Filesize
1KB

MD5
7b07167e4c03c5d5c82f5186e842cc3e

SHA1
3c92799e1d8a2c1afd40a2dc5c71d726e6582ee2

SHA256
375db0ec936ea0f7073e62bbed8490d988f0fa0717fd44f695d2e089af71bb1c

SHA512
377e5368cf605a0d745b54b5603cda25d416110d1652c6686ff6ca0b8487256f9dc37cd6cbdd96c801bdf5c022e37a52aa02e7cf03739d4609bc0cb4d4dc490e

Download Submit
memory/1148-133-0x0000000005380000-0x000000000538A000-memory.dmp

Filesize
40KB

Download
memory/1148-132-0x00000000051D0000-0x0000000005262000-memory.dmp

Filesize
584KB

Download
memory/1148-134-0x0000000007740000-0x00000000077DC000-memory.dmp

Filesize
624KB

Download
memory/1148-135-0x0000000007DD0000-0x0000000007E36000-memory.dmp

Filesize
408KB

Download
memory/1148-130-0x0000000000790000-0x0000000000838000-memory.dmp

Filesize
672KB

Download
memory/1148-131-0x0000000005780000-0x0000000005D24000-memory.dmp

Filesize
5.6MB

Download
memory/1424-143-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/1424-156-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/1424-147-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/1424-144-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/1424-140-0x0000000000000000-mapping.dmp

Download
memory/1424-142-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/1528-151-0x0000000006BA0000-0x0000000006BBE000-memory.dmp

Filesize
120KB

Download
memory/1528-152-0x0000000007F30000-0x00000000085AA000-memory.dmp

Filesize
6.5MB

Download
memory/1528-145-0x0000000005630000-0x0000000005652000-memory.dmp

Filesize
136KB

Download
memory/1528-146-0x00000000058D0000-0x0000000005936000-memory.dmp

Filesize
408KB

Download
memory/1528-138-0x0000000002CA0000-0x0000000002CD6000-memory.dmp

Filesize
216KB

Download
memory/1528-148-0x00000000065E0000-0x00000000065FE000-memory.dmp

Filesize
120KB

Download
memory/1528-149-0x0000000006BE0000-0x0000000006C12000-memory.dmp

Filesize
200KB

Download
memory/1528-150-0x000000006FD20000-0x000000006FD6C000-memory.dmp

Filesize
304KB

Download
memory/1528-159-0x0000000007C10000-0x0000000007C18000-memory.dmp

Filesize
32KB

Download
memory/1528-141-0x0000000005940000-0x0000000005F68000-memory.dmp

Filesize
6.2MB

Download
memory/1528-153-0x00000000078F0000-0x000000000790A000-memory.dmp

Filesize
104KB

Download
memory/1528-154-0x0000000007960000-0x000000000796A000-memory.dmp

Filesize
40KB

Download
memory/1528-155-0x0000000007B70000-0x0000000007C06000-memory.dmp

Filesize
600KB

Download
memory/1528-136-0x0000000000000000-mapping.dmp

Download
memory/1528-157-0x0000000007B20000-0x0000000007B2E000-memory.dmp

Filesize
56KB

Download
memory/1528-158-0x0000000007C30000-0x0000000007C4A000-memory.dmp

Filesize
104KB

Download
memory/3792-137-0x0000000000000000-mapping.dmp

Download

description	pid	process	target process
PID 1148 wrote to memory of 1528	1148	Sample_price list_new order.exe	powershell.exe
PID 1148 wrote to memory of 1528	1148	Sample_price list_new order.exe	powershell.exe
PID 1148 wrote to memory of 1528	1148	Sample_price list_new order.exe	powershell.exe
PID 1148 wrote to memory of 3792	1148	Sample_price list_new order.exe	schtasks.exe
PID 1148 wrote to memory of 3792	1148	Sample_price list_new order.exe	schtasks.exe
PID 1148 wrote to memory of 3792	1148	Sample_price list_new order.exe	schtasks.exe
PID 1148 wrote to memory of 1424	1148	Sample_price list_new order.exe	Sample_price list_new order.exe
PID 1148 wrote to memory of 1424	1148	Sample_price list_new order.exe	Sample_price list_new order.exe
PID 1148 wrote to memory of 1424	1148	Sample_price list_new order.exe	Sample_price list_new order.exe
PID 1148 wrote to memory of 1424	1148	Sample_price list_new order.exe	Sample_price list_new order.exe
PID 1148 wrote to memory of 1424	1148	Sample_price list_new order.exe	Sample_price list_new order.exe
PID 1148 wrote to memory of 1424	1148	Sample_price list_new order.exe	Sample_price list_new order.exe
PID 1148 wrote to memory of 1424	1148	Sample_price list_new order.exe	Sample_price list_new order.exe
PID 1148 wrote to memory of 1424	1148	Sample_price list_new order.exe	Sample_price list_new order.exe
PID 1148 wrote to memory of 1424	1148	Sample_price list_new order.exe	Sample_price list_new order.exe

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads